2101021222211 has 4 divisors (see below), whose sum is σ = 2111579118000. Its totient is φ = 2090463326424.

The previous prime is 2101021222207. The next prime is 2101021222217. The reversal of 2101021222211 is 1122221201012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2101021222211 - 2² = 2101021222207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101021222211.

It is not an unprimeable number, because it can be changed into a prime (2101021222217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5278947596 + ... + 5278947993.

It is an arithmetic number, because the mean of its divisors is an integer number (527894779500).

Almost surely, 2^{2101021222211} is an apocalyptic number.

2101021222211 is a deficient number, since it is larger than the sum of its proper divisors (10557895789).

2101021222211 is a wasteful number, since it uses less digits than its factorization.

2101021222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10557895788.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2101021222211 its reverse (1122221201012), we get a palindrome (3223242423223).

It can be divided in two parts, 2101021 and 222211, that added together give a palindrome (2323232).

The spelling of 2101021222211 in words is "two trillion, one hundred one billion, twenty-one million, two hundred twenty-two thousand, two hundred eleven".